code: def render_load(
      self, output_dtype, buf_name, buf_dtype, idx, local=False
  ) -> str:
      if isinstance(buf_dtype, ImageDType):
          assert output_dtype == dtypes.float.vec(
              4
          ), f"images must be float4, getting {output_dtype}"
          return f"read_imagef({buf_name}, smp, {idx})"
      if (
          self.uses_vload
          and buf_dtype.scalar() == dtypes.float16
          and output_dtype.scalar() != dtypes.float16
      ):
          return f"vload_half{'' if output_dtype.sz == 1 else str(output_dtype.sz)}(0, {buf_name}+{idx})"
      if output_dtype.sz > 1:
          out_val = f"*(({self.smem_prefix if local and self.smem_prefix_for_cast else self.buffer_prefix}{buf_dtype.name}{output_dtype.sz}*)({buf_name}+{idx}))"  # noqa: E501
      else:
          out_val = (
              f"*({buf_name}+{idx})"
              if self.uses_ptr_arithmetic
              else f"{buf_name}[{idx}]"
          )
  
      return (
          self.render_cast([out_val], output_dtype)
          if output_dtype != buf_dtype
          else out_val
      )
  
imports: from typing import Dict, List, Optional, NamedTuple, Tuple, Union, DefaultDict, cast, Literal, Callable
  import math, functools
  from collections import defaultdict, Counter
  from tinygrad.codegen.linearizer import UOps, UOp
  from tinygrad.ops import UnaryOps, BinaryOps, TernaryOps
  from tinygrad.helpers import prod, strip_parens, getenv
  from tinygrad.dtype import ImageDType, dtypes, DType, PtrDType
label_desc: Use image node_id 3 for calling the CStyleLanguage obj's underlying member method code with example usage: obj.render_load(output_dtype, buf_name, buf_dtype, idx, local) and returns: unknown, str, buf_name, str, idx, str, str, unknown, str, buf_name, str, idx, str